Thought this was really interesting. I really hope to see some kind of inter-dimensional war story at one point. But the questions this poses is really interesting
My list mostly contains folk-metal and some melodic metal
My top 10:
1. Amon Amarth
2. Leaves' Eyes
3. Ensiferum
4. Eluveitie
5. Heidevolk
6. Nightwish
7. Korpiklaani
8. Megaherz
9. Kamelot
10. Sirenia